- A reinforcement used to resist shear and diagonal tension stresses in a concrete structural member.
- A steel bar bent into a "U" or box shape and installed perpendicular to, or at an angle to the longitudinal reinforcement, and properly anchored.
- Lateral reinforcement formed of individual units, open or closed, or of continuously wound reinforcement. The term stirrups is usually applied to lateral reinforcement in flexural members and the term ties to lateral reinforcement in vertical compression members. See also tie.
Origin & History of “stirrup”
A stirrup is etymologically a ‘climbing rope’. The word goes back to a prehistoric Germanic compound formed from the base *stig- ‘climb’ (source also of English stair and stile) and *raipaz (ancestor of English rope). The earliest stirrups were looped pieces of rope.